CN105314955B - A kind of filling in mine material - Google Patents
A kind of filling in mine material Download PDFInfo
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- CN105314955B CN105314955B CN201510876040.7A CN201510876040A CN105314955B CN 105314955 B CN105314955 B CN 105314955B CN 201510876040 A CN201510876040 A CN 201510876040A CN 105314955 B CN105314955 B CN 105314955B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention provides a kind of filling in mine material; its raw material includes iron tailings (20~53.5) part by mass; granulated blast-furnace slag (0~30) part; slag ground polywater mud (15~25) part; dihydrate gypsum (4~6) part; early strength agent sodium chloride (0~0.5) part, through being sufficiently stirred for, vibrating, pouring shaping, maintenance after each raw material mixing.The filling in mine material early strength is big, the micro expansion compensation of the slag drying shrinkage of casting resin, presses performance with improving, efficiently make use of the metallurgical wastes such as slag, blast furnace slag, iron tailings, protects ecological and environment.
Description
Technical field
The invention belongs to metallurgical environmental protection technical field, and in particular to a kind of filling in mine material and its production method.
Background technology
The mining of mine exploiting field ends, and discarded underground roadway, stope and outdoor pit and waste-rock yard need timely filling again,
To avoid the presence because of underground mining stope and earth's surface open-air pit, cause extensive land subsidence to be slid with massif, cause farmland, water
Storehouse, the destruction of road and industrial and civilian construction facility.The many iron ores of China are in the goaf backfill comprehensive regulation stage, need
A large amount of geo-polymers are wanted as mass concrete raw material.At present, the production of mass concrete also mainly uses routine
Cement, mine tailing, sandstone mix and stir and form, backfill cost is higher.
Ground polymer material J.Davidovits is developed rapidly after succeeding in developing in China, and ground polywater mud is in many fields
Conjunction replaces ordinary portland cement, there is that intensity is high, hardening is fast, acid-alkali-corrosive-resisting more excellent properties than ordinary portland cement.Traditional ground polywater
Mud is, using clay, industrial residue or slag as primary raw material, through appropriate PROCESS FOR TREATMENT, chemistry to be passed through under lower temperature conditions
React an obtained class Novel Inorganic Polymers material.There is ground polywater mud material to enrich, technique is simple, cheap, save
The advantages of energy.The carbon dioxide discharged according to the study in geo-polymer production process is only 1/5th of portland cement,
Made contributions for development of iron and steel enterprises recycling economy.
The basicity of slag is between 2.9~3.3, higher level in belonging to, with higher lateral reactivity, and it is radiated
Property is relatively low, far below relevant national standard.After China's slag cement is succeeded in developing from last century, and national standard is formulated.So
And, slag cement has the low deficiency of active low, early strength.If can by slag by manufacture ground polywater mud,
The problem that slag pollutes environment at present will be solved well, also improve the comprehensive utilization added value of slag, but overcome at present
Technical barrier that slag cement is promoted, realize its recycling, to play slag potential be one technology urgently to be resolved hurrily difficult
Topic.
The content of the invention
The technical problems to be solved by the invention be for above-mentioned the deficiencies in the prior art provide a kind of filling in mine material and
Its production method, using the grown place such as slag, iron tailings polywater mud and filling in mine material, realizes the resources such as slag and iron tailings two
Secondary effective utilization, makes the ground of mine filling press improvement of terms.
The technical scheme that the present invention is used by solution the problem of set forth above for：
A kind of filling in mine material, its raw material includes iron tailings, granulated blast-furnace slag, slag ground polywater mud, dihydrate gypsum, morning
Strong agent sodium chloride, each raw material proportioning is calculated as with mass fraction：20~53.5 parts of iron tailings, 0~30 part of granulated blast-furnace slag, slag
15~25 parts of ground polywater mud, 4~6 parts of dihydrate gypsum, 0~0.5 part of early strength agent sodium chloride.
The application process of filling in mine material of the present invention：Each raw material have been weighed by above-mentioned raw materials consumption, and by water ash
Than 0.43~0.67 control add water, it is agitated, vibrate, pour shaping, conserve.
Further, the iron tailings is iron tailings sand, is discharged by iron ore after the techniques such as broken, wet-milling, magnetic separation
The screened processing of mine tailing chip after formed, its chemical composition is by percentage to the quality：SiO2：55~72%, Al2O3：5~
11%th, Fe2O3：8~13%, CaO：2.5~6%, MgO：3~6%, K2O：1~3%, Na2O：1~3%, SO3：0~1%.
Further, the granulated blast-furnace slag refers to ground granulated blast furnace slag.Ground granulated blast furnace slag (abbreviation slag
Powder) it is to meet granulated blast-furnace slag as defined in GB/T203 standards and reach suitable fineness through drying, grinding and meet corresponding activity to refer to
Target powder.Specific surface area >=350m of heretofore described slag powders2/ kg, 7 days activity index >=60%.
Further, slag ground polywater mud, its preparation method comprises the following steps：
1) take slag hot application, roller, the heat technique such as vexed to carry out stabilization processes, make free calcium oxide in slag
Content is less than 3%；
2) by step 1) slag after gained stabilization processes carries out broken, magnetic separation, screening etc. and handles, and makes metal therein
Iron content is less than 3%, obtains steel slag tailings；
3) by step 2) gained steel slag tailings be dried, make water content control 0.1~0.5%；Dried slag
Tailings is 100 according to mass ratio with retarder, mineralizer：(0.1~0.5)：Powder after the ratio of (3.5~10.5) is well mixed
Mill, makes its granularity be maintained at 310~560m2/ kg, that is, with obtaining slag poly- cement products.
Specifically, described retarder is a kind of or several in ardealite, citric acid gypsum, desulfurated plaster, fluorgypsum
Plant mixture in any proportion.
Specifically, described mineralizer is according to mass ratio (0.2~4.5) by silicate clay and alkaline sodium salt：1
Naturally the mineralising mixture of calcining (25~95) min formation at (850~1100) DEG C.Wherein, the silicate clay is selected from height
One or more in ridge soil, bentonite, sepiolite, the alkaline sodium salt is in sodium hydroxide, sodium acid carbonate, sodium carbonate
It is one or several kinds of.
The utilization slag grown place polywater mud of the present invention and the operating method and its principle of filling in mine material are：
Slag polywater mud preparation process in, the present invention stabilization processes have been carried out to primary raw material slag, make steel
The content of the free calcium oxide of slag be less than 3%, it is ensured that slag polywater mud volume stability；And after through magnetic separation, screening etc.
Processing, makes steel slag tailings metal Ferrum content be less than 3%, with further ensure that the later stage stability of polywater mud；Follow-up compounding
In grinding, mineralizer serves the effect of exciting agent during steel slag tailings grinding is into cement prepared by high-temperature process,
The service behaviour of the retarder of industrial gypsum composition with improving slag polywater mud, and slag the fineness outline of polywater mud be narrower than
Ordinary cement, then mainly consider to excite the early activity of slag to obtain early strength.
In the preparation process of filling in mine material, on the basis of innovation with preparing slag polywater mud, further with two
Water gypsum improves the service behaviour of filling in mine material, and early strength and the work of filling in mine material are excited with early strength agent sodium chloride
Property, early activity is low when overcoming traditional steel slag utilization, and intensity forms slow deficiency；The main component of iron tailings sand is
SiO2, and contain higher Al2O3And Fe2O3, it is substantially the same with the composition of natural sand, and its density and porosity meet specification and wanted
Ask；Granulated blast-furnace slag pore structure is uniform, good toughness, rough surface, and intensity is high and with the hydraulicity, is good coarse aggregate,
It is suitable for configuring filling in mine material.
Compared with prior art, the method have the benefit that：
1) slag produced by the invention the 7d and 28d of polywater mud compression strength respectively reached 32.5 ordinary portland cement
Quite, it is suitable for preparing filling in mine material, filling in mine material 7d and 28d compression strength produced by the invention can divide on this basis
43.63~45.16MPa, 49.50~59.38MPa are not reached.
2) present invention by slag be used for grown place polywater mud solve before slag in cement concrete in early days it is inactive,
The deficiencies such as deuterogenesis's expansion, and make full use of the microdilatancy of slag to be compensated for the drying shrinkage of filling in mine material, improve and fill
The ground pressure performance filled out, makes the ground of mine filling press improvement of terms.
3) present invention, which takes full advantage of the secondary resources such as slag and iron tailings preparation filling in mine material, can not only solve steel
The problem of environmental pollution that slag and the unordered accumulation of iron tailings are caused, and preparing geology polymer material with slag rinsing ball mill
Without using " two mills one burn " calcine technology, titanium dioxide that resource and the energy are largely consumed as production portland cement in technique
Carbon emission is few, realizes carbon emission reduction, alleviates environmental pollution, real to realize " turning waste into wealth ", and solid is improved to greatest extent and is given up
The utilization added value of gurry.
Brief description of the drawings
Fig. 1 is the production technology figure of slag grown place polywater mud.
Fig. 2 is the poly- manufacture of cement filling in mine material manufacturing technique figure in slag ground.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not
It is limited only to the following examples.
In embodiment, the various raw materials being related to all are powders, wherein, iron tailings used is iron tailings sand, by iron ore
Formed after the screened processing of mine tailing chip discharged after the techniques such as broken, wet-milling, magnetic separation, its chemical composition is with quality percentage
Than being calculated as：SiO2：62%th, Al2O3：8%th, Fe2O3：9%th, CaO：3.5%th, MgO：4.3%th, K2O：1.8%th, Na2O：1.2%th,
SO3：0.4%；The granulated blast-furnace slag refers to ground granulated blast furnace slag, abbreviation slag powders specific surface area >=350m2/ kg, 7 days
Activity index >=60%.
Embodiment 1
Using converter slag with preparing the slag in the present embodiment polywater mud of the large-scale steel enterprise in Wuhan production, it is grasped
Make flow as shown in Figure 1, specifically include following steps：
1) hot application technique is taken hot steel slag to carry out stabilization processes, the content for making the free calcium oxide in slag is
0.5%；
2) slag after stabilization processes is subjected to the processing such as broken, magnetic separation, screening, obtains steel slag tailings, make slag tail
The metal Ferrum content of slag is 2%；
3) by step 2) gained steel slag tailings be dried, make its water content control 0.5%, according still further to dried steel
Slag tailings, retarder, the mass ratio of mineralizer are 100：0.1：Three is carried out well mixed rear grinding by 3.5 ratio, makes it
Granularity is maintained at 450m2/ kg, with obtaining slag poly- cement products.Wherein, the retarder added is desulfurated plaster；Added
Mineralizer be according to mass ratio 1 by kaolin, sepiolite and sodium hydroxide：1：After 10 mixing, calcined naturally at 1000 DEG C
The mineralising mixture of 35min formation.
After testing, the slag poly- strength of cement it is suitable with 32.5 ordinary portland cement, its 7d and 28d compression strength difference
22.61MPa and 45.32MPa are reached.
Using the poly- cement filling in mine material in the ground of the slag obtained by the present embodiment, its method is：Weigh by mass
Each 20 parts of raw material iron tailings, 30 parts of granulated blast-furnace slag, slag ground 15 parts of polywater mud, 4 parts of dihydrate gypsum, early strength agent sodium chloride
0.1 part, in use, after load weighted each raw material are mixed, and water (wherein, the ratio of mud=water is added by the ratio of mud 0.45
Quality/the quality of polywater mud (quality+slag of granulated blast-furnace slag)), it is agitated, vibrate, pour shaping, oxygen maintenance i.e.
Can.Through strength test, the filling in mine material its 7d and 28d compression strength has respectively reached 36.51MPa and 48.04MPa.
Embodiment 2
The converter slag produced using Hunan Loudi City steel mill produces slag ground the polywater mud, its operation stream of the present embodiment
Journey as shown in drawings, specifically includes following steps：
1) hot vexed technique is taken hot steel slag to carry out stabilization processes, the content for making the free calcium oxide in slag is
2.5%；
2) slag after stabilization processes is subjected to the processing such as broken, magnetic separation, screening, obtains steel slag tailings, make slag tail
The metal Ferrum content of slag is 0.8%；
3) by step 2) gained steel slag tailings be dried, make its water content control 0.8%, according still further to dried steel
Slag tailings, retarder, the mass ratio of mineralizer are 100：0.2：The well mixed rear grinding of three is made its granularity by 4.0 ratio
It is maintained at 510m2/ kg, with obtaining slag poly- cement products.Wherein, the retarder added is citric acid gypsum；Added
Mineralizer is according to mass ratio 1 by bentonite, kaolin and sodium hydroxide：1：After 10 mixing, calcined naturally at 950 DEG C
The mineralising mixture of 42min formation.
After testing, the slag poly- strength of cement it is suitable with 32.5 ordinary portland cement, its 7d and 28d compression strength difference
27.88MPa and 38.79MPa are reached.
Using the poly- cement filling in mine material in the ground of the slag obtained by the present embodiment, its method is：Weigh by mass
Each 45 parts of raw material iron tailings, 5 parts of granulated blast-furnace slag, slag ground 25 parts of polywater mud, 6 parts of dihydrate gypsum, early strength agent sodium chloride 0.5
Well mixed part is filling in mine material.In use, the filling in mine material prepared is controlled by the ratio of mud 0.55 to add water,
It is agitated, vibrate, pour shaping, oxygen maintenance.Through strength test, the filling in mine material its 7d and 28d compression strength point
32.47MPa and 49.12MPa are not reached.
Embodiment 3
Produced using Kunming steel mill electric furnace slag the present embodiment slag polywater mud method, specifically include following step
Suddenly：
1) roll processes are taken hot steel slag to carry out stabilization processes, the content for making the free calcium oxide in slag is
2.8%；
2) slag after stabilization processes is subjected to the processing such as broken, magnetic separation, screening, obtains steel slag tailings, make slag tail
The metal Ferrum content of slag is 2.6%；
3) by step 2) gained steel slag tailings be dried, make its water content control 0.2%, according still further to dried steel
Slag tailings, retarder, the mass ratio of mineralizer are 100：0.2：The well mixed rear grinding of three is made its granularity by 5.5 ratio
It is maintained at 350m2/ kg, with obtaining slag poly- cement products.Wherein, the retarder added is ardealite；The mineralising added
Agent is according to mass ratio 1 by bentonite and sodium acid carbonate:After 1 mixing, the mineralising for calcining 50min formation naturally at 1050 DEG C is mixed
Compound.
After testing, the slag poly- strength of cement it is suitable with 32.5 ordinary portland cement, its 7d and 28d compression strength difference
34.57MPa and 43.04MPa are reached.
Using the poly- cement filling in mine material in the ground of the slag obtained by the present embodiment, its method is：Weigh by mass
Each 53.5 parts of raw material iron tailings, 18 parts of granulated blast-furnace slag, slag ground 25 parts of polywater mud, 3 parts of dihydrate gypsum, early strength agent sodium chloride
It is filling in mine material that 0.5 part well mixed.In use, the filling in mine material prepared is controlled by the ratio of mud 0.65 to add water
Amount, it is agitated, vibrate, pour shaping, oxygen conserve.Through strength test, the filling in mine material its 7d and 28d compression strength
41.26MPa and 46.09MPa are respectively reached.
Described above is only the preferred embodiment of the present invention, it is noted that come for one of ordinary skill in the art
Say, without departing from the concept of the premise of the invention, some modifications and variations can also be made, these belong to the present invention's
Protection domain.
Claims (7)
1. a kind of filling in mine material, it is characterised in that its raw material with including iron tailings, granulated blast-furnace slag, slag polywater mud,
Dihydrate gypsum, early strength agent sodium chloride, each raw material proportioning are calculated as with mass fraction：20~53.5 parts of iron tailings, granulated blast-furnace slag 5
~30 parts, slag ground 15~25 parts of polywater mud, 4~6 parts of dihydrate gypsum, 0.1~0.5 part of early strength agent sodium chloride；
Slag ground polywater mud, its preparation method comprises the following steps：
1) stabilization processes are carried out to slag, the content of the free calcium oxide in slag is less than 3%；
2) by step 1) slag after gained stabilization processes carries out broken, magnetic separation and screening process, contains metallic iron therein
Amount is less than 3%, obtains steel slag tailings；
3) by step 2) gained steel slag tailings be dried, make water content control 0.1~0.5%；Dried steel slag tailings
With retarder, mineralizer according to mass ratio be 100：0.1~0.5：Grinding after 3.5~10.5 ratio is well mixed, makes its grain
Degree is maintained at 310~560m2/ kg, that is, with obtaining slag poly- cement products；
Described mineralizer is according to mass ratio 0.2~4.5 by silicate clay and alkaline sodium salt or sodium hydroxide：1 850~
Naturally the mineralising mixture of 25~95min formation is calcined at 1100 DEG C.
2. a kind of filling in mine material according to claim 1, it is characterised in that the iron tailings is iron tailings sand.
3. a kind of filling in mine material according to claim 1, it is characterised in that the chemical composition of the iron tailings is with quality
Percentages are：SiO2：55~72%, Al2O3：5~11%, Fe2O3：8~13%, CaO：2.5~6%, MgO：3~6%,
K2O：1~3%, Na2O：1~3%, SO3：0~1%, each chemical constituent sum meets 100%.
4. a kind of filling in mine material according to claim 1, it is characterised in that the granulated blast-furnace slag refers to that granulation is high
Stove slag powders, its specific surface area >=350m2/ kg, 7 days activity index >=60%.
5. a kind of filling in mine material according to claim 1, it is characterised in that described retarder is ardealite, citric acid
One or several kinds of mixtures in any proportion in gypsum, desulfurated plaster, fluorgypsum.
6. a kind of filling in mine material according to claim 1, it is characterised in that the silicate clay is selected from kaolin, swollen
One or more of mixtures in any proportion in profit soil, sepiolite.
7. a kind of filling in mine material according to claim 1, it is characterised in that the alkaline sodium salt is selected from sodium acid carbonate, carbon
The mixture of one or two kinds of in any proportion in sour sodium.
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| CN107129166B (en) * | 2017-04-01 | 2019-05-03 | 三明学院 | A kind of green composite cement and preparation method thereof |
| CN107628789B (en) * | 2017-09-25 | 2020-08-11 | 嘉兴晟源工业设计有限公司 | Preparation method of fast-setting soft rock grouting material |
| CN109896788B (en) * | 2018-05-23 | 2021-03-23 | 湖北工业大学 | Grouting material for building connecting piece prepared by wet grinding mode |
| CN109455969B (en) * | 2018-12-17 | 2021-04-27 | 湖北工业大学 | Method for preparing concrete micro-expanding agent from industrial solid waste steel slag |
| CN110256028A (en) * | 2019-06-13 | 2019-09-20 | 山东大学 | A kind of bastard coal ground mass mine cemented filling material and preparation method |
| CN111187045B (en) * | 2020-01-13 | 2022-02-08 | 安徽工业大学 | Mine underground filling mortar prepared from steel slag sand and mineral processing waste |
| CN112094063A (en) * | 2020-11-02 | 2020-12-18 | 长沙理工大学 | Wet-grinding tailing-based mine filling cementing material and preparation method and application thereof |
| CN112830716B (en) * | 2021-01-13 | 2022-06-28 | 东北大学 | Multi-industry solid waste fiber modified geopolymer and preparation method thereof |
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| CN101544485B (en) * | 2009-04-20 | 2011-07-27 | 西安建筑科技大学 | Method for preparing geopolymer and organic macromolecule composite gelled material |
| CN101628791B (en) * | 2009-06-25 | 2012-11-28 | 深圳航天科技创新研究院 | Geopolymer gel material for rush repairs and rush constructions |
| CN102531480B (en) * | 2011-12-28 | 2014-02-26 | 武汉钢铁集团开圣科技有限责任公司 | Gelatinizing agent of mine fillers |
| CN102562148B (en) * | 2012-01-11 | 2015-01-28 | 昆明理工大学 | Iron tailings cementing-filling method |
| CN102527690B (en) * | 2012-01-11 | 2014-11-05 | 昆明理工大学 | Curing and dry-piling method of iron tailings |
| CN103342481B (en) * | 2013-07-08 | 2016-01-13 | 武汉理工大学 | A kind of filling in mine cementitious slurry and preparation method thereof |
| CN103588405B (en) * | 2013-09-11 | 2015-08-12 | 武汉钢铁(集团)公司 | Slag is utilized to wash the method for ball milling mud production geology polymkeric substance |
| CN104326720A (en) * | 2014-10-13 | 2015-02-04 | 武汉钢铁(集团)公司 | Production method for cementing material by utilizing steel slag and cementing material |
| CN104386929B (en) * | 2014-10-27 | 2016-10-05 | 武汉钢铁(集团)公司 | Slag is utilized to produce production method and the Binder Materials of Binder Materials |
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